A recent study indicates that people who stop using blockbuster GLP-1 drugs like Mounjaro or Wegovy may regain reduced body mass at a significantly accelerated pace than those who halt traditional diet and exercise regimens.
Findings released in a leading health publication points out that while obese individuals often shed substantial amounts of their body weight while on the medication, the weight comes back at an estimated rate of nearly a kilo each month after stopping.
"Individuals using these medications should be aware of the potential of rapid rebound weight gain when the treatment concludes," warns researcher Dr. Susan Jebb.
This pace of regain implies a return to pre-treatment mass in about 18 months.
Weighing Treatments
The analysis, which examined dozens of trials involving thousands of participants, contrasted the outcomes of GLP-1 agonists with older methods.
Scientists note that people who shed pounds through lifestyle changes alone generally see a slower weight regain—around 100 grams monthly—after stopping.
The Reason for the Rapid Rebound
Experts believe the way of the jabs is key to understanding the accelerated weight return.
These medications copy a body's own chemical called glucagon-like peptide-1, which helps regulate appetite.
"Artificially providing GLP-1 concentrations far above than normal could lead to the system to generate a reduced amount of its endogenous GLP-1, and may also lessen sensitivity to its actions," said Dr. Adam Collins, a nutrition researcher.
"Withdrawal of this GLP-1 'fix' results in hunger is no longer kept in check, making overeating a significant risk."
A Lifelong Issue?
Health authorities advise the injections for individuals with weight-linked health risks, alongside recommended diet and exercise modifications.
A number of clinicians argue that, due to the likelihood of relapse, the therapy might need to be ongoing.
This view is supported by pharmaceutical companies, who say that the results "emphasize the long-term nature of excess weight," similar to managing diseases like hypertension.
Patient Testimonies
Users who have stopped the medication report a sudden return of appetite.
"It felt as if a switch flipping and I was suddenly starving," described one woman.
This challenge is compounded if patients have not adopted permanent lifestyle or habit modifications during treatment.
Significant Adoption
Figures suggest that a significant number of people in the UK have tried weight-loss jabs in the past year, with demand continuing to grow.
- Use is higher among females than males.
- The middle-aged age group shows the greatest usage rates.
- A large proportion obtain the medications through private healthcare rather than the NHS.
Ultimately, researchers stress that while these medications are effective agents for shedding pounds, they are not a standalone cure and maintained weight loss relies on ongoing behavioural changes.
